# Vibration function check vs DB RelationalAlgebra

The clearest difference is ads: DB RelationalAlgebra at none against Vibration function check's shown. Vibration function check's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Vibration function check | DB RelationalAlgebra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Fortnightly |
| Size | 7 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yasushi Tauchi](https://appshunter.io/developer/1819284921) | [Artur Borycki](https://appshunter.io/developer/6792125744) |

## What reviewers say

### Vibration function check

[App page](https://appshunter.io/ios/app/vibration-function-check/id6770183889)

**In-app purchases:** none


### DB RelationalAlgebra

[App page](https://appshunter.io/ios/app/db-relationalalgebra/id6792125742)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Vibration function check free?

Vibration function check is free to download, with no in-app purchases.

### Is DB RelationalAlgebra free?

DB RelationalAlgebra is free to download, with no in-app purchases.

### Do Vibration function check or DB RelationalAlgebra have ads?

Vibration function check shows ads; DB RelationalAlgebra does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*